X-Haibei Pair of Boat Fenders Ball Round Anchor Buoy | Dock Bumper Ball Inflatable Vinyl A-Series Shield Protection Marine Mooring Buoys Quanity: 2pcs *Best quality environmental protection raw material(PVC),UV-Protected. The products do not fade.1 year warranty. *The scope of application: Small boat / yacht / boat dock / yacht dock ,also can be use as floater / navigation buoy / mooring buoy / water safety buoy . *The boat fender is deflated when shipped, buyers need inflate by them selves.we give specialized inflating needles for free. Please do not inflate too much air.It is better to reserve some space for it. Use your finger to press the surface.It can down a little easily.The recommend inflation is 2 psi, about 0.013Mpa.